Machine for forming hollow glassware



Feb. 21, 1933.

J. H. TREECE ET AL MACHINE FOR FORMING HOLLOW GLASSWARE Filed Jan. 22, 1930 4 Sheets-Sheet l Feb. 21, 1933. H TREECE AL 1,898,408

MACHINE FOR FORMING HOLLOW GLASSWARE Filed Jan. 22, 1930 4 Sheets-Sheet 2 I 7.71 op I06 5 7-7/1 Closed 62 Feb. 21, 1933. J. H. TREECE ET AL MACHINE FOR FORMING HOLLOW GLASSWARE Filed Jan. 22, 1930 4 Sheets-Sheet 3 2 M 67 7 1i dam.

Feb. 21, 1933. J. H. TREECE ET AL MACHINE FOR FORMING HOLLOW GLASSWARE Filed Jan. 22, 1930 4 Sheets-Sheet 4 duo 1 He l cal Patented Feb. 21, 1933 UNITED STATES PATENT OFFICE JESSE H. TREE-CE, OF TOLEDO, OHIO, AND JOHN E. MCLAUGHLIN, OF' ALTON, ILLINOIS,.

ASSIGNORS TO OWENS-ILLINOIS GLASS COMPANY, A CORPOR-A'FiON OF OHIO MACHINE FOR FORMING HOLLOW GLASSWAR-E Application filed January 22; 1930. Serial No. 422,573.

The present invention relates to improvements in machines for forming hollow glassware and more particularly to machines in which the articles of glassware are partially formed in blank molds on one table and then transferred to finishing molds on another table for final shaping. I

In machines of the above character, more or less difliculty has been encountered in eli'oeting transfer of the partially formed articles or blanks without to a greater .01 less degree distorting or in some way marring their surface formation. This is particularly true where the available period of time for transfer is quite short because of the blank and finishing mold tables being rotated continuously at comparatively high speed.

An object of the present invention is the provision of novel means embodying com-. paratively simple construction for transferring blanks or parisons from one mold to another without many way detrimentally.

a flecting the structure of the blanks or parisons. 7

Another object is the provision of a novel form of transfer mechanism in which suction or vacuum is employed in supporting a blank or parison during closing of the finishing mold.

Other objects will be in part apparent and in part pointed out hereinafter.

In the drawings:

Fig. 1 is a vertical sectional elevation of one head or mold group embodying our invention, said head being in mold charging position.

Fig. 2 is a sectional plan view showing part of the means for controlling application of vacuum to a blank mold for gathering mold charges.

Fig. is a sectional view similar to Fig. -1

showing the relat've positions of the blank forming unit and finishing mold upon com pletion of a blank transfer operation.

. Figs. 4. 5 and (i are views diagrammaticallv illustrating the several successive steps taken in' transferring blanks from the blank :ziold to the finishing mold. Fig. 4 shows both the blank and finishing molds open and a blank suspended from the neck mold. Fi

5 shows the finishing mold almost completely closed, the neck mold open, and the blank suspended from a holder to which it is attached by vacuum or suction. Fig. 6 shows the finishing mold completely closed and the blank holder and neck mold retracted from the'position over said finishing mold.

Fig. 7 is a plan view showing the neck mold at one stage of its opening movement and the finishing mold at one stage of its closing movement. substantially as indicated in Fig.

5 wherein the blank is supported by vacuum on the holder.

Fig. 8 is'a front elevation of a blank mold group embodying our invention.

Fig. 9 is a vertical sectional view taken along the line IXIX of Figs. 1 and 10 showing the vacuum passageways through the blank and neck mold hinge pin.

Fig. 10 is a sectional plan view taken along jected to suspend a blank in positionto be enclosed in a finishing mold.

Fig. 14 is a. plan view with parts in section taken substantially along a plane of line XTVXIV of Fig. 3 showing the neck mold open. 4 i

Fig. 15 is a view similar to Fig. 13 showing the relative positions of the parts upon completion of the blank transfer operation.

In the accompanying drawings illustrating the preferred embodiment ofour invention. the machine with which the invention is shown comprises a blank mold table and finishing mold table 21. the said tables arranged side by side 'on a portable base 22. These tables are adapted to be rotated continuously about different vertical axes in op.- posite directionsso that adjacent portions of the tables move in substantially the same directionto facilitate transfer of blanks or narisons from the blank molds to the finishing molds. Rotary motion is imparted to these tables from any suitable source of power (not shown) through a pinion 23 running in mesh with a ring gear 24 (Figs. 1 and 3) on the blank mold table 20, said ring gear in turn having driving connection to a ring gear 25 which is suitably connected to the finishing mold table 21.

A stationary central column 26 (Fig. 2) supports the various mechanisms making up the blank forming unit. A drum 27 encircles the lower end of the central column 26 and is provided with circular air and vacuum chambers 28 andv 29 respectively, suitably connected to air and vacuum pipes 30 and 31. A rotary lower spider 32 comprising part of the blank mold carriage is mounted on the drum 27 and carries the various blank mold groups. A circular air chamber 33 is formed in this lower-spider 32 and constantly communicates with the air chamber 28 in the drum 27 by way of a vertical port 34. Such construction is necessary to insure constant flow of air under pressure to the chamber 33 because of relative movement between the lower spider 32 and the drum 27. Air under pressure in the chamber 33 is used solely to operate plunger mechanism as will be described hereinafter. A circular vacuum chamber 35 is formed in the lower spider 32 adjacent and inwardly from the air chamber 33 and communicates with the vacuum chamber 29 in the drum 27 by way of a port 36 orports. These chambers 29 and 35 constitute part of a Vacuum supply system for applying vacuum to the blank and neck molds for the purpose of gathering mold charges, and a blank holderfor supporting blanks or parisons by vacuum or suction during a portion of the blank transfer operation. This feature will be fully described hereinafter. A series of cams employed to actuatevarious mechanisms to be now setforth, are suitably fixed to the central column 26.

' Each blank mold group 37 includes a dipping frame 38'mounted for vertical reciprocation whereby the blank mold may be brought periodically into contactwith the surface of a supply body of molten glass 39 in a container 40. This dipping frame "column 26. Vertical reciprocation of this dipping frame whereby the blank mold 47 is periodically lowered into contact with the glass, is obtained by means including a bell crank lever 48 which is pivoted to a horizontal hinge pin 49 on the upper spider 46 and connected through a link 50 to the upper cross bar 42 of said frame. This bell crank lever is rocked about the hinge pin 49 at regular time intervals by a cam 51 which is adjustably mounted on a bearing plate 52 just beneath the upper spider 46. Adjustment of the cam 51 to determine the point of dip and perhaps the length of the gathering period is obtainable by loosening the set screw 53, moving thecam as desired, and then again tightening the screw 53. The bearing plate 52 (Fig. l) which carries the cam 51, also rotatively supports the upper spider 46.

The blank mold 47 (Figs. 1, 3 and 8) coinprises two half sections connected through mold arms 54 to a vertical hinge pin 55 extending vertically upward from a forward extension 56 on the lower cross bar 43. Alternate-opening and closing of this mold is obtained by a mechanism including a slide 57 mounted in slideways 58 for reciprocation radially of the blank mold table, said slide connected at its outer end through links 59 to the mold arms 54. A cam roll 60 at the inner end of the slide 57 runs in a stationary camv 61 on the central column 26, said cam being shaped to reciprocate the'slide and thereby alternately open and close the blank mold 47 in timed relation to operation of other parts of the machine.

The neck mold 62 which co-operates with the blank mold 47 in gathering mold charges and transforming them into blanks or parisons is connected through mold arms 63 to a vertical hinge pin 64 (Figs. 1, 3, 9 and 10) which depends from the forward end of a horizontal slide 65 extending radially of the blank mold table in guides 112. This-slide 65 also supports plunger mechanism 85 and a holder 86 .from which the bare blanks or parisons are suspended during a portion of the blank transfer. operation, as will be set forth hereinafter. Means for alternately opening and closing the neck mold 62 comprises a slide 66 (Figs. 1, 3 and 14) mounted in slideways 67 extending radially of the blank mold table between the uprights 41- of the dipping frame, said slide connected at its outer end through links 68 to the neck mold arms 63. A' cam roll 69 suitably connected to the inner end of the slide 66 (Figs. 1 and 14) is adapted for engagement at regular time intervals with an angular portion 77 of a stationary cam 70 for the purpose of closing the neck mold after each transfer operation. An expansion coil spring 71 (Figs. 1 and 3) encircling the guide rod 72 arranged beneath the slide 66 normally ex- *ertsan outward pressure on slide to vieldmold closed. )Vhen the mold is opened and the slide is at the inner end of its path of movement, a spring pressed detent enters the recess 74 and positively holds the neck mold open. Opening of the neck mold ($2 is controlled by closing movement of the finishing mold T8. The finishing mold consists of two co-opcrating sections pivoted together and carrying arms 79. Cam rolls on the outer ends of the arms 79 are adapted to contact with cam faces 81 (Fig. 14) on the neck mold slide 66 during closing of the finishing mold, with the result that the slide is moved radially inward until the neck mold is com-- pletely opened and the detent 75 snaps into the recess 74 or socket. At a later point during the blank transfer operation, the cam roll 69 leaves the cam 70-and in so doing strikes an angular portion 77 or arm which overcomes the holding influence of the spring pressed detent 75 and allows the coil spring 71 to move the neck mold slide. (56 radially outward to thereby close the neck mold 62. The detent 73 then enters the recess 74 and 111 co-operation with the spring 71 positively holds the neck mold closed. This feature and its relation to other operations will be described hereinafter.

The slide 65 referred to heretofore as supporting the neck mold 632 also carries the plungermechanism and a blank holder 86, the latter adapted to support blanks or parisons during closng of the finishing mold and opening of the neck mold. as stated heretofore. Both the plunger mechanism 85 and blank holder 86 are mounted on the forward end of an arm 87 which in turn is connectcd to 'the slide 65 through a vertical hinge pin 88. This arm 87 is formed with a hub portion 89 through which the hinge pin 64 extends. The vertical open ng 90 (Fig. 9) through this hub portion 89 is of slotlike formation so that the arm 87 may move in a horizontal plane relative to the hinge pin (54 and about the axisof the hinge pin 88. as will be pointed out presently. Radial reciprocation of the slideGT is controlled by the stationary cam 91 on the central column 26. operating through a cam roll 92 suit-ably connected to the inner end of the arm 87.

The plunger mechanism 85 (Figs. 1. 3 and comprises an air motor 93 fixed to the upper side of the arm 87 forwardly of the hinge pin (34. said motor. including a piston 94 carrying a piston rod 95 which coust'tutes a holder for the plunger 90. This rod 9:) or plunger holder projects verti -all v downward through aligned openings in the arm ST and blank holder 86. A coil spring 97 encircling the plunger holder 95 yieldingly supports the piston 94 in its uppermost position so that the plunger 96 normally above the neck mold 62. Periodically the plunger is projected into the neck mold. For this purpose air under pressure is introduced into the upper end of the air motor 93 at regular tlme lntervals through a ]omted pipe 98 which leads to a valved opening 99 in the.

of the a'r motor 93 may be released to the atmosphere. This allows the coil spring 97 to expand and raise the piston 94 and plunger 96.

. The blank holder 86 by which blanks are supported during closing of the finishing mold and opening of the neck mold comprises a circular housing 104 attached to the lower side of the arm 87 in vertical alignment with the ar motor 93. A block 105 is fittedinto the lower end of the housing 104 and has its lower surface provided with a recess 106 which co-operates with the neck mold (S2 in forming the finishing or sealing ends of the articles of glassware. A series of vacuum slots 107 in the block 105 provide communication between the marginal portion of th s recess 106 and the interior of the housing 104 above said block. said interior adapted to be vacuumized during a portion of the blank transfer operation so that blanks or parisons will be attached to the holder by vacuum or suction.

During the charge gathering operat on, vacuum is applied to the cavities of the blank and neck molds 47 and 62 respectively. Later while the neck mold is opening and the finishing mold is closing during the blank transfer operation, vacuum is applied to the recess 106 in the lower end of the blank holder 86 so that the blank s suspended from the holder until the finishing mold has completely closed.

Application of vacuum to the blank and neck mold cavities (Figs. 1, 3, 8, 9, 10 and 13) is obtained by providing a supply pipe 109, one end of which is connected through a valve 110 to the vacuum chamber 35, while its other end opens into a port 111 formed in one of the slide 'avs 112 in which the slide 65 is mounted. The valve 110 (Fig. 1) is actuated at regular time lntervals by a StiltlOIF ,arv cam 112) mounted on the central column 26 The slide ()5 (Figs. 9 and 15) which carries the mold hinge pin 64 is formed with a passageway 114 extending transversely thereof and opening at one-end through a port 115 which is adapted to register with the port 111 when the neck and finishing molds are closed so that upon opening of the valve 110, air will be exhausted from the pipe 109 and passageway 114. This passageway 114 in the slide 65 communicates at its nmer end with a substantially inverted L shaped conduit 116 in the hinge pin 64, the lower end of said conduit in turn communicating with lateral passageways 117 (Figs. 9 and 10) which are in constant communication with conduits 118 extending lengthwise in the neck mold arms 63. semicircular chambers 119 (Figs. 10 and 11) in the sections of the neck mold 62 are connected to the conduits 118 and together with cavities and replaced by a mold charge of molten glass.

During a portion of the blank transfer operation, vacuum is applied to the recess 106 in the lower face of the blank holder. This is necessary only after the neck mold opens and ceases to su port the blank or parison. As stated hereto ore, the neck mold is opened by mechanism whose operation is mainly controlled by the closing movement of the finishing mold. Just before the neck mold opens, the slide 65 assumes the position shown in Fig. 13 and during opening of said mold is projected to the position shown in Fig. 15, such positioning of the slide in part controlling the application of vacuum to said recess 106 (Fig. 11) in that it opens up communication between the cavity 106 and valve 126. A vacuum pipe 125 is connected through the valve 126 to the vacuum chamber 35, said pipe having one end (Figs. 13 and 15) opening into a port 126 formed in a portion of the slide 112. The slide 65 (Figs. 9 and 13) has a transverse passageway 127 therein opening at its outer end into a channel 128 provided in one side of the slide, the other end of the conduit 127 communicating with a substantially inverted L-shaped passageway 129 in the hinge pin 64. This passageway 129 (Figs. 9 and 12) communicates with a lateral opening 130 in the hub portion 89 of the arm 87 and thence through a conduit 131 with an annular chamber 132 constituting the interior of the blank holder 86. Whenthe slide 65 assumes the positions shown in Figs. 3, 13 and 15 and the valve 126 is opened by the stationary cam 133, air is exhausted from the recess 106 through the vacuum slots 107 and the series of communicating conduits and passageways just described and thereby attaches the blank or parison to the holder 86.

Each finishing mold unit comprises a partible finishing mold 78, heretofore referred to, mounted on a vertical hinge pin 134 rising from the finishing mold table 21. A bottom plate 135 of conventional form is associated withthe mold. In orderto insure accurate registry of the blank holder 86 and finishing mold 78 during the transfer operation, a centering device is mounted on the finishing mold carriage 21, said device comprising a pair of jaws 136 pivoted upon the upper end of the hinge pin 134 and adapted for gripping contact with the holder housing 104 after the latter has been projected as shown in Fig. 13. These jaws or arms 136 are connected through links 137 to a slide 138 which may be-reciprocated radially of the finishing mold table 21 at regular time intervals by any suitable mechanism (not shown).

In operation, the blank and finishing mold tables are rotated continuously in opposite directions whereby the adjacent portions are moved in substantially the same direction at the point at which the partially formed articles or blanks are transferred from the molds of one table to those of the other table. As a blank mold 47 moves past the container 40 for molten glass, the bell crank lever 48 (Fig. 1) is rocked in a fashion to lower the dipping frame 38 so that the bottom end of the blank mold 47 contacts with the surface of the supply body of glass 39. moment the valve 110 (Figs. 1, 3 and 8) is opened so that air is exhausted from the neck and blank mold cavities by way of the vacuum pipe 109 and passageways in the slide 65 and hinge pin 64 (Figs. 2, 9, 10 and 11). Such communication between the vacuum chamber 35 (Fig. 1). and blank and neck mold cavities is dependent not only upon opening of the valve 110 but in addition upon proper positioning of the slide 65 (Fig. 2) whereby communication between the passageway 114 and pipe 109 is established. After the neck and blank mold cavities have been completely filled with molten glass, the bell crank lever 48 is again moved by the cam 51 to raise the dipping frame 38 preparatory to severance of the mold charge from the supply body by shears or the like (not shown). Application of vacuum may be discontinued at this point or continued until the neck mold 62 and support slide 65 therefor begin their projecting movement for the blank transfer operation. At this point A (Figs. 13 and 15) where the slide 65 and parts carried thereby start to move radially outward, the valve 110 is closed to thereby shut off application of vacuum to the blank and neck mold cavities. Just prior to initial projection of the neck mold and immediately after application of vacuum to the blank and neck molds has been discontinued, the blank mold 47 is opened by means of mechanism actuated by the cam 61. Radial outward movement of the slide 65 also breaks communication between the pipe 109 and passageway 114 (Fig. 2) as shown in Figs. 13 and 15 and immediately brings the other vacuum pipe 125 into direct communication with the channel 128 in one wall of the slide 65, so that upon At this I opening of the second vacuum valve 126, vacuum may be applied to the recess 106 in the blank holder 86. lVhen the blank mold group reaches point B, the neck mold will have been projected radially outward by the cam 91 to a position over and in register with the corresponding finishing mold 78. Here the centering device carried by the finishing mold hinge pin 131 and comprising the arms 136, firmly engages about the blank holder 86 (Figs. 3 and 13) to insure registry of the finishing mold and blank holder during the blank transfer operation. Immediately upon completion of engagement between the centering device and blank holder, which occurs approximately on a centerline through the two mold tables 20 and 21, the cam roll 92 (Figs. 1 and 13) moves into the open space located between points B and D so that movement of the blank holder during the actual transfer of the blank is controlled solely by movement of the finishing mold table. While the blank mold group moves from point B to point D (F igs..13 and 15), the centering device, due to rotation of the finishing mold table and gradual movement of the finishing mold away from the blank mold table, causes the slide 65 to move radially outward from the position shown in Fig. 13 to that indicated in Fig. 15. Substantially at the beginning of such radial movement of the slide, the finishing mold 78 is closed. As the finishing mold sections move together, the cam rolls 80 on the ends of the arms 7 9 ride over the cams 81 011 the neck mold slide 66, causing. said slide to move radially inward (Fig. let) and thereby open the neck mold 6:2. There is a short time interval in which the blank or parison is completely without supporting means in so far as the neck finishing molds 62 and 78 are concerned- This condition exists as shown in Fig. 7 just before the finishing mold completely closes and while the neck mold 62 is being opened by mechanism which is actuated by closing of the finishing mold 78. At this point, vacuum which has been initially applied to the cavity 106 in the lower end of the blank holder 86 while the neck mold was closed, is maintained, and serves to reliably hold the blank or parison against dropping through the neck and blank molds. A valve 126 (Figs. 3 and 8) referred to heretofore, controls and regulates application ofvacuum to this holder 86. After the finishing mold 78 has completely closed about the parison and the bottom j plate 135, the valve 126 is closed to shut off supply of vacuum to said holder. As the neck and finishing molds follow their respective paths of travel and move away from each other, the cam roll 69 comprising part of the neck mold mechanism, strikes the angular portion 77 of the cam (Figs. 14 and 15) by which the neck mold slide 66 is given an initial outward move- 5 directions ment, breaking connection betweenthe slide and detent and releasing the slide to the influence of the coil spring 71 (Fig. 3). This spring 71 immediately expands as indicated in Fig. 1 so that the neck mold 62 is closed. preparatory to resuming a position for co-operation with the blank mold. Between points 1) and E the slide 65 and parts carried thereby are moved radially inward and brought into register with the corresponding blank mold which may now be closed, or held open for additional cooling, if necessary.

Due to the increased distance between the blank holder 86 and the blank mold table 20 during each transfer operation, said holder moves at 'a slightly higher speed than the finishing mold to which the blank is being transferred. To compensate for this speed diit'erential, the arm 87 (Figs. 3 and 13) which carries said holder is free to rock in a horizontal plane about the hinge pin 88 due in part to the slot-like formation of the opening 90 for the hinge pin 6st. Thus, register of the holder and finishing mold during the entire transfer operation is assured.

Modifications may be resorted to within the spirit and scope of the appended claims.

What we claim is:

1. A glassware forming machine comprising a pair of mold tables arranged side by side and rotatable continuously about different vertical axes, means for rotating the tables in opposite directions wherebv ad- "ja'cent portions move in substantially the same direction, a blank mold on one table, apartible neck mold associated with the blank mold, means for transferring blanks from the' blank mold to the finishing moldv comprising mechanism for projecting the neck mold to a. position over and in register with the finishing mold, means for opening the neck mold, means for closing the finishing mold substantially simultaneously with opening of the neck mold, and suction means for supporting the blanks during opening of the neck mold and closing of the finishing mold.

2. In a glassware forming machine, the combination of a pair of mold tables arranged side by side and rotating in opposite about different vertical axes whereby adjacent portions move in substantially ithe same direction, means for continuously rotating said tables, a partible finishing mold on one table, a partible blank mold onthe other table, a partible neck mold co-operating with the blank mold. a blank holder associated with the neck mold, means for forming a blank in the blank and neck molds. means for opening the blank mold leaving a bare blank suspended from the neck mold, means for then moving the neck mold and holder to a position over and in register with a corresponding finishing mold, means for simultaneously opening the neck mold and closing the finishing mold, and means to apply vacuum to said holder forsupporting the blank during opening of the neck mold and closing of the finishing mold.

3. In a glassware forming machine, the combination of a pair of mold tables arranged side by side and rotating in opposite directions about different Vertical axes whereby'adjacent portions move in substantially the same direction, means for continuously rotating said tables, a partible finishing mold on one table, a partible blank mold on the other table, a partible neck mold co-operating with the blank mold, a blank holder associated with the neck mold, means for forming a blank in'the blank and neck molds, means for opening the blank mold leaving a bare blank suspended from the neck mold, means for then moving the neck mold and holder to a position over and in register with a corresponding finishing mold, means for closing the finishing mold, means actuated by closing of the finishing mold to open the neck mold, and means for applying vacuum to said holder to support the blank during closing of the finishing mold and opening of the neck mold.

4. In a glassware forming machine, a blank mold table, an annular series of mold groups thereon, each group comprising a partible blank mold, a partible neck mold, a blank holder arranged over the neck mold, a radially reciproeable slide supporting the neck mold and blank holder, means for forming a blank in the blank and neck molds, means for reciprocating the slide to carry the neck mold and holder to a blank transfer position, a partible finishing mold, means for closing the finishing mold about the blank and simultaneously opening the neck mold, and means actuated in part by radial outward movement-of the slide to apply vacuum to the holder for supporting the blank during closing of the finishing mold and opening of the-neck mold. I

5. A glassware forming machine including a blank mold table rotatable about a vertical axisfmeans for continuously rotating said table, a blankmold group mounted on the table and including a partible blank mold, a partible neck mold, a blank holder associated with said molds, a slide mounted for radial horizontal movement on said table, an arm bare parison suspended from the neck mold,

means for then projecting the slide radially outward to place the blank in position to be enclosed in a finishing mold, a finishing mold for enclosing the bare blank, means for opening the neck mold, means for applying vacuum to the holder for supporting the blank, and means associated with the finishing mold to engage the holder and during a portion 7 of the transfer operation swing the arm, holder and neck mold in a horizontal plane relative to the slide.

6. In a glassware forming machine, a pair of mold tables arranged side by side and rotatable continuously about different vertical axes, means for rotating the tables in opposite directions whereby adjacent portions move in substantially the same direction at a blank transfer station, a partible finishing mold on one table, partible co-operating neck and blank molds on the other table, a blank holder arranged over the neck mold, means for transferring blanks from the blank mold to the finishing mold, said transfer means utilizing the neck mold as a blank support during a portion of the transfer operation and the holder during the remaining portion, and means for applying vacuum to said holder to attach blanks thereto.

7. In a glassware forming machine, a pair of mold tables arranged side by side and rotatable continuously about different vertical axes, means for rotating the tables in opposite directions whereby adjacent portions move in substantially the same direction at a blank transfer station, a partible finishing mold on one table, partible co-operating neck and blank molds on the other table, a blank holder arranged over the neck mold, means for transferring blanks from the blank mold to the finishing mold, said transfer means utilizing the neck mold as a blank support during a portion of the transfer operation and the holder during the remaining portion, means for applying vacuum to said holder to attach blanks thereto, means for closing the finishing mold about a blank attached to the holder, and means whereby closing of the finishing mold causes opening of the neck mold.

8. In a glassware forming machine, a pair of mold tables arranged side by side and rotatable continuously about different vertical axes, means for rotating the tables in opposite directions whereby adjacent portions move in substantially the same direction at a blank transfer station, a partible finishing mold 011 one table, partible co-operating neck and blank molds on the other table, a blank holder arranged over the neck mold, means for transferring blanks from the blank mold to the finishing mold, a radially movable slide for alternately opening and closing the neck mold, a spring device adapted to more the slide in one direction to close the neck mold, means actuated by closing of the finish ing mold to move the slide in an opposite direction to open the neck mold, and yielding means for holding the slide in either position.

9. .A glassware forming machine including a pair of partible cooperating body blank and neck molds, said neck mold disposed at the upper end of the body blank mold, a partible finishing mold, means for forming a parison in the body blank and neck molds, means for bringing all of said molds to a parison transfer position, mechanism for opening the body blank and neck molds at said transfer means tor bringing all of said molds to a parison transfer position, mechanism for opening the body blank and neck molds at said transfer position, a parison supporting device adapted to engage the neck portion of a parison at the transfer position, means for applying suction to said device and thereby attaching the parison thereto while the parison is supported in the closed neck mold, .and mcanstor closing the finishing mold about the parison while suspended from said device.

11. A machine for 'forming hollow glass. articles including a blank mold, means for introducing a charge of molten glass into the mold and forming a parison therein, a parison holding device in operative position relative to the mold while the glass is being introduced and in which position it contacts with the glass, means for applying suction to said holding device after the parison has been formed in the mold and thereby holding the parison by suction, and means for disengaging the moldfrom the parison and leaving the latter supported by said holding device and held thereto by suction.

12. In a machine for forming hollow glass articles, the combination of a mold open at its lower end, means for introducing a charge of glass by suction mto the mold through said end, a holding devlce above the mold 1n position to contact; with the upper end of the glass when the latter is introduced into the mold, means broughtinto'activity after the charge of glass has entered the mold for applying suction to said holding device, and means for opening the mold and leaving the glass suspended from said holding device and held thereto solely by suction.

13. In a machine for forming hollow glas articles, the combination-of a-body blank mold, a neck mold in register therewith, means for ntroducing a charge of glass into said molds, a holding device in register with the neck mold, means for opening the body mold and leaving the blank of glass suspended from the neck mold, means for applying suction to said holding device, and means for opening the neck mold and leaving the blank suspended from the holding device and held thereto by suction.

14. In a machine for forming hollow glass articles, the combination of a body blank mold, a. neck mold in register therewith, means for introducing a charge of glass into said molds, a holding device in register with the neck mold, a finishing mold, means for opening the body blank mold, means for closing the finishing mold around the blank, means for opening the neck mold before the finishing mold has completed its closing movement, and means for causing said holding device to hold the blank during the time interval between theopening of the neck mold and the complete closing of the finishing mold.

15. In a machine for forming hollow glass articles, the combination of a body blank mold, a neck mold in register therewith, means for introducing a charge of glass into said molds, a holding device in register with the neck mold, a finishing mold, means for opening the body blank mold, means for closing the finishing mold around the blank, means for opening'the neck mold before the finishing mold has completed its closing movement, and suction means for causing said holdin device to hold the blank during the time interval between the opening of the neck mold and the complete closing of the finishing mold.

16. In a machine for forming hollow glass articles, the combination of a body blank mold, a neck mold above an d in register therewith, a'finishing mold, each of said molds comprising horizontally separable sections movable to and from each other for closing and opening the molds, means for introducing a charge of glass into the combined body blank and neck molds and forming a parison therein, means for opening the body blank mold and leaving a parison suspended from the neck mold, means for bringing the finishing'mold into position'to be enclosed about the suspended parison, means for opening the neck mold, means for closing the finishing mold about the parison and completing the closing movement of the finishing mold after the neck mold has commenced to open, and

v a parison holding device operable to engage the parison and hold the latter during the time interval between the commencement of the opening of the neck mold and the complete closing of the finishing mold.

17. In a machine for forming hollow glass articles, the combination of a body blank mold, a neck mold above and in register therewith, a finlshmg mold, each of said molds comprising horizontally separable sections movable to and from each other for closing and opening the molds, means for introducing a charge of glass into the combined body blank and neck molds and forming a parison therein, means for opening the body blankmold and leaving a parison suspended from the neck mold, means for bringing the finishing mold into position to be enclosed about the suspended parison, means for opening the neck mold, means for closing the finishing mold about the parison and completing the closing movement of the finishing mold after the neck mold has commenced to open, a parison holding device operable to engage the parison and hold the latter during the time interval between the commencement of the opening of the neck mold and the complete closing of the finishing mold,'said holding device comprising a vacuum passageway leading to the parison, and means for applying vacuum to said passageway and thereby holding the parison in engagement With the holder by suction.

Signed at Toledo, in the county of Lucas and State of Ohio, this 11th day of January,

JESSE H. TREECE. Signed at Alton, in the county of Madison and State ofIllinois, this 16th day of January, 1930. i

JOHN E. MGLAUGHLIN. 

